base.py 文件源码

def limit_clause(self, select, **kw):
        text = ''
        if select._limit_clause is not None:
            text += ' \n LIMIT '
            if select._offset_clause is not None:
                text += self.process(select._offset_clause, **kw) + ', '
            text += self.process(select._limit_clause, **kw)
        else:
            if select._offset_clause is not None:
                raise exc.CompileError('OFFSET without LIMIT is not supported')

        return text